Ex-Typhoon Ampil

The third major storm in less than a week affected western Alaska yesterday, courtesy of the remnant circulation of Typhoon Ampil.  The low pressure center came in a bit farther north than the previous two storms, but high winds were widespread across the western coastline and hills.

Here's the MSLP analysis from 4pm AKDT yesterday, courtesy of Environment Canada:

The wind gusted to 55 mph in Nome in the early evening, and the peak sustained wind of 41 mph ties the Nome record for August, set back in 1949.  To find a stronger storm in early autumn, we have to look to the first week of September, when 44 mph sustained winds were measured in 1964.  (But instrumentation is different nowadays, so it's not really a fair comparison.  In recent years the most comparable event was August 24, 2012, with 37 mph.)

Here are some of the peak wind gusts around the region yesterday (in mph):

Although this is the 3rd storm in quick succession, it's actually the 4th storm to hit the west coast in the past two weeks (I missed the first one in my previous post).  Here's the MSLP analysis from the afternoon of August 10: this one came in much farther south.

The 14-day precipitation is 2-4 times normal across much of the west and northwest, and the anomaly pattern is extremely similar to the July outcome - except for Southeast, where it's been much drier lately.